docs: def _load(self, scale=0.001):
          """Load the Sentinel-2 MSI relative spectral responses
          """
  
          with open_workbook(self.path) as wb_:
              for sheet in wb_.sheets():
                  if sheet.name not in SHEET_HEADERS.keys():
                      continue
  
                  plt_short_name = PLATFORM_SHORT_NAME.get(self.platform_name)
                  if plt_short_name != SHEET_HEADERS.get(sheet.name):
                      continue
  
                  wvl = sheet.col_values(0, 1)
                  for idx in range(1, sheet.row_len(0)):
                      ch_name = MSI_BAND_NAMES[plt_short_name].get(str(sheet.col_values(idx, 0, 1)[0]))
                      if ch_name != self.bandname:
                          continue
  
                      resp = sheet.col_values(idx, 1)
                      resp = np.array(resp)
                      resp = np.where(resp == '', 0, resp).astype('float32')
                      mask = np.less_equal(resp, 0.00001)
                      wvl0 = np.ma.masked_array(wvl, mask=mask)
                      wvl_mask = np.ma.masked_outside(wvl, wvl0.min() - 2, wvl0.max() + 2)
  
                      wvl = wvl_mask.compressed()
                      resp = np.ma.masked_array(resp, mask=wvl_mask.mask).compressed()
                      self.rsr = {'wavelength': wvl / 1000., 'response': resp}
  
                      break
  
                  break